/**
 * Created with Intellij IDEA.
 * Description;
 * User:墨琦
 * Data:2023-04-22
 * Time:18:14
 */
public class TreeNode {
    int val;
    TreeNode left;
     TreeNode right;
    TreeNode() {}
    TreeNode(int val) { this.val = val; }
    TreeNode(int val, TreeNode left, TreeNode right) {
       this.val = val;
        this.left = left;
        this.right = right;
     }


}
